The Collaborative International Dictionary of English v.0.48:

Chancellery \Chan"cel*ler*y\, n. [Cf. Chancery.]
   Chancellorship. [Obs.] --Gower.
   [1913 Webster]

WordNet (r) 3.0 (2006):

chancellery
    n 1: a government building housing the office of a chancellor

Moby Thesaurus II by Grady Ward, 1.0:

104 Moby Thesaurus words for "chancellery":
   aedileship, archbishopric, archiepiscopacy, archiepiscopate,
   aristocracy, bishopric, booking office, box office, branch,
   branch office, cabinet, chairmanship, chambers, chancellorate,
   chancellorship, chancery, chiefery, chiefry, chieftaincy,
   chieftainry, chieftainship, closet, consulate, consulship,
   corporate headquarters, deanery, den, dictatorship, dictature,
   directorship, embassy, emirate, episcopacy, executive office,
   governorship, headquarters, headship, hegemony, hierarchy,
   home office, leadership, legation, lordship, magistracy,
   magistrateship, magistrature, main office, masterdom, mastership,
   mastery, mayoralty, mayorship, metropolitanate, metropolitanship,
   nobility, office, papacy, pashadom, pashalic, patriarchate,
   patriarchy, pontificality, pontificate, popedom, popehood,
   popeship, prefectship, prefecture, premiership, presidency,
   presidentship, prime-ministership, prime-ministry, princedom,
   princeship, principality, proconsulate, proconsulship,
   protectorate, protectorship, provostry, provostship, rectorate,
   rectorship, regency, regentship, ruling class, seigniory,
   seneschalship, seneschalsy, sheikhdom, sheriffalty, sheriffcy,
   sheriffdom, shop, shrievalty, study, supervisorship, suzerainship,
   suzerainty, ticket office, tribunate, vizierate, viziership